Besides the horizontal angle (“Heading”), sometimes the vertical angle is a required property. A text description of a particular track point would be helpful, as well. So we extend the above format by another 2 columns.

To keep the format flexible, a text field for metadata is also added to the table, resulting in a 15-column table. Before the actual track table the general description of the track and the ECEF bounding box for the entire track is stored as a single-row 3-column resp. 8-column table. An example track: